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General Purpose Low Voltage Transformers

Reliable and Efficient Power

MGM Transformers’ Low Voltage (600V Class) Dry-Type General Purpose Transformers deliver dependable, efficient power for a wide range of commercial and industrial applications. Stocked in over 20 major cities across the continental U.S., these units are readily available to support fast-moving project timelines with proven reliability and performance.

In addition to our stocked offering, MGM specializes in custom-engineered solutions tailored to unique application requirements. Whether you need non-standard voltage combinations, specialized tap arrangements, unique winding configurations, or custom enclosures, our team of 50+ engineers can design and build transformers to align precisely with your operational needs.

All units are built with industry-leading features to ensure safety, durability, and efficiency, backed by our vertically integrated manufacturing process and stringent quality controls.

Looking for a medium voltage option? Click Here

KEY Features:

  • DOE 2016 Efficiency Compliant: Designed to meet modern energy standards for lower operating costs.
  • Certified for Safety and Durability: UL 506 and UL 1561 Listed, with seismic certification per ASCE/SEI 7-05 and OSHPD OSP Pre Approval.
  • Voltage Configurations: Any voltage combination to suit your system requirements.
  • Winding: Available with aluminum or copper windings to suit your needs.
  • Frequency: Available with 50, 60 or 50/60 Hz
  • Enclosure Types: Options include NEMA 1, 3R, 4, 4X, and more to match environmental conditions.
  • Special Applications: Designs for low-noise environments, marine duty, solar duty, totally enclosed non-ventilated (TENV) settings, autotransformers, and OSHPD-certified enclosures.

Why Choose MGM Transformers?

  • Nationwide Availability: Stocked in 20 major cities for fast delivery.
  • Reliable Performance: Engineered to provide consistent power for critical loads.
  • Durable and Certified: Built to meet seismic and safety standards.
  • Energy Efficient: Designed to reduce energy losses and comply with DOE standards.
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STANDARD FEATURES

  • DOE 2016 Efficiency Compliant
  • UL 506, UL 1561 Listed
  • Aluminum or Copper Windings
  • 60 Hz
  • Electrostatic Shield
  • 150°C Temperature Rise
  • Seismically Certified per ASCE/SEI 7-05
  • OSHPD OSP Pre Approval

SOUND LEVELS

600 Volt class general purpose dry type transformers designed to meet NEMA ST-20 sound levels.

ACCESSORIES

  • Seismic Kits
  • Wall Brackets
  • Rodent Screens
  • Weathershield Kits

TESTING AND QUALITY ASSURANCE

As part of MGM Transformers’ quality assurance process, all 600 Volt transformers go through a rigorous IEEE test plan to ensure optimum performance. These tests include:

  • Winding resistance test
  • Turns ratio test
  • Polarity and phase relation test
  • No load losses and exciting current test
  • Impedance and load loss test
  • Applied potential test

ENCLOSURES

Ventilated transformers utilize a NEMA 2 rated drip proof metal enclosure with natural draft ventilation. MGM Transformers’ dual rated enclosures are suitable for indoor or outdoor applications and are standard on all models except the 225, 300, and 500 kVA transformers (optional Weather-shield Kits are available for these units).

VOLTAGE TAPS

Taps will compensate for the high or low line voltages. MGM Transformers’ 600 Volt class transformers are provided with 6 primary taps:

  • 2 taps @ 2-1/2% FCAN
  • 4 taps @ 2-1/2% FCBN
480 – 208/120 | 60 HZ, 150ºC, 3 PHASE, ALUMINUM​
CAT #
ALT #
RATING
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HT15A3B2-D16
15YS*D16
15 KVA
28
21
14
235
A
HT30A3B2-D16
30YS*D16
30 KVA
32
26.5
17
355
B
HT45A3B2-D16
45YS*D16
45 KVA
32
26.5
17
425
B
HT75A3B2-D16
75YS*D16
75 KVA
38.5
28.5
20
595
B+
HT112A3B2-D16
112YS*D16
112.5 KVA
40.5
31.5
21.75
795
C
HT150A3B2-D16
150YS*D16
150 KVA
40.5
36.5
21.75
1,020
C+
HT225A3B2-D16
225YS*D16
225 KVA
51.5
40.5
26.5
1,580
D
HT300A3B2-D16
300YS*D16
300 KVA
51.5
40.5
26.5
1,875
D
HT500A3B2-D16
500YS*D16
500 KVA
66
50.5
32
3,295
E
HT750A3B2-D16
750YS*D16
750 KVA
80.25
64
50
3,850
F
480 – 240/120ct | 60 HZ, 150ºC, 3 PHASE, ALUMINUM
CAT #
ALT #
RATING
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HT15A3K2-D16
15DS*D16
15 KVA
28
21
14
240
A
HT30A3K2-D16
30DS*D16
30 KVA
32
26.5
17
355
B
HT45A3K2-D16
45DS*D16
45 KVA
32
26.5
17
425
B
HT75A3K2-D16
75DS*D16
75 KVA
38.5
28.5
20
590
B+
HT112A3K2-D16
112DS*D16
112.5 KVA
40.5
31.5
21.75
790
C
HT150A3K2-D16
150DS*D16
150 KVA
40.5
36.5
21.75
1,015
C+
HT225A3K2-D16
225DS*D16
225 KVA
51.5
40.5
26.5
1,570
D
HT300A3K2-D16
300DS*D16
300 KVA
51.5
40.5
26.5
1,865
D
HT500A3K2-D16
500DS*D16
500 KVA
66
50.5
32
3,215
E
240 – 208/120 | 60 Hz, 150ºC, 3 PHASE, ALUMINUM
CAT #
ALT #
RATING
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HT15C3B2-D16
15CS*D16
15 KVA
28
21
14
235
A
HT30C3B2-D16
30CS*D16
30 KVA
32
26.5
17
355
B
HT45C3B2-D16
45CS*D16
45 KVA
32
26.5
17
425
B
HT75C3B2-D16
75CS*D16
75 KVA
38.5
28.5
20
595
B+
HT112C3B2-D16
112CS*D16
112.5 KVA
40.5
31.5
21.75
795
C
HT150C3B2-D16
150CS*D16
150 KVA
40.5
36.5
21.75
1,010
C+
240X480 – 120/240 | 60 Hz, 150ºC, 1 PHASE, ALUMINUM
CAT #
ALT #
RATING
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HS10C3B2-D16
10SS*D16
10 KVA
28
21
14
175
A
HS15C3B2-D16
15SS*D16
15 KVA
28
21
14
205
A
HS25C3B2-D16
25SS*D16
25 KVA
32
26.5
17
270
B
HS37C3B2-D16
37SS*D16
37.5 KVA
32
26.5
17
345
B
HS50C3B2-D16
50SS*D16
50 KVA
32
26.5
17
385
B
HS75C3B2-D16
75SS*D16
75 KVA
38.5
28.5
20
530
B+
HS100C3B2-D16
100SS*D16
100KVA
40.5
31.5
21.75
620
C
480V DELTA PRIMARY-480y/277, 60 Hz, 150°C, 3 PHASE, ALUMINUM
CAT #
Alt #
Rating
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HT15A3D2-D16
15AD*D16
15 KVA
28
21
14
240
A
HT30A3D2-D16
30AD*D16
30 KVA
32
26.5
17
355
B
HT45A3D2-D16
45AD*D16
45 KVA
32
26.5
17
425
B
HT75A3D2-D16
75AD*D16
75 KVA
38.5
28.5
20
590
B+
HT112A3D2-D16
112AD*D16
112.5 KVA
40.5
31.5
21.75
790
C
HT150A3D2-D16
150AD*D16
150 KVA
40.5
36.5
21.75
1015
C+
HT225A3D2-D16
225AD*D16
225 KVA
51.5
40.5
26.5
1570
D
HT300A3D2-D16
300AD*D16
300 KVA
51.5
40.5
26.5
1865
D
HT500A3D2-D16
500AD*D16
500 KVA
66.0
50.5
32.0
3215
E
208V DELTA PRIMARY-480y/277, 60 Hz, 150°C, 3 PHASE, ALUMINUM
CAT #
Alt #
Rating
H (in)
W (in)
D (in)
Weight (lbs)
DIMS DWG
HT15G3D2-D16
15GD*D16
15 KVA
28
21
14
240
A
HT30G3D2-D16
30GD*D16
30 KVA
32
26.5
17
355
B
HT45G3D2-D16
45GD*D16
45 KVA
32
26.5
17
425
B
HT75G3D2-D16
75GD*D16
75 KVA
38.5
28.5
20
590
B+
HT112G3D2-D16
112GD*D16
112.5 KVA
40.5
31.5
21.75
790
C
HT150G3D2-D16
150GD*D16
150 KVA
40.5
36.5
21.75
1015
C+
HT225G3D2-D16
225GD*D16
225 KVA
51.5
40.5
26.5
1570
D
HT300G3D2-D16
300GD*D16
300 KVA
51.5
40.5
26.5
1865
D
HT500G3D2-D16
500GD*D16
500 KVA
66.0
50.5
32.0
3215
E
240V DELTA PRIMARY-480y/277, 60 Hz, 150°C, 3 PHASE, ALUMINUM
CAT #
Alt #
Rating
H (in)
W (in)
D (in)
Weight (lbs)
DIMS DWG
HT15C3D2-D16
15CD*D16
15 KVA
28
21
14
240
A
HT30C3D2-D16
30CD*D16
30 KVA
32
26.5
17
355
B
HT45C3D2-D16
45CD*D16
45 KVA
32
26.5
17
425
B
HT75C3D2-D16
75CD*D16
75 KVA
38.5
28.5
20
590
B+
HT112C3D2-D16
112CD*D16
112.5 KVA
40.5
31.5
21.75
790
C
HT150C3D2-D16
150CD*D16
150 KVA
40.5
36.5
21.75
1015
C+
HT225C3D2-D16
225CD*D16
225 KVA
51.5
40.5
26.5
1570
D
HT300C3D2-D16
300CD*D16
300 KVA
51.5
40.5
26.5
1865
D
HT500C3D2-D16
500CD*D16
500 KVA
66.0
50.5
32.0
3215
E
208V DELTA PRIMARY – 120/208, 60 Hz, 150°C, 3 PHASE, ALUMINUM
CAT #
Alt #
Rating
H (in)
W (in)
D (in)
Weight (lbs)
DIMS DWG
HT15G3B2-D16
15GB*D16
15 KVA
28
21
14
240
A
HT30G3B2-D16
30GB*D16
30 KVA
32
26.5
17
355
B
HT45G3B2-D16
45GB*D16
45 KVA
32
26.5
17
425
B
HT75G3B2-D16
75GB*D16
75 KVA
38.5
28.5
20
590
B+
HT112G3B2-D16
112GB*D16
112.5 KVA
40.5
31.5
21.75
790
C
HT150G3B2-D16
150GB*D16
150 KVA
40.5
36.5
21.75
1015
C+
HT225G3B2-D16
225GB*D16
225 KVA
51.5
40.5
26.5
1570
D
HT300G3B2-D16
300GB*D16
300 KVA
51.5
40.5
26.5
1865
D
HT500G3B2-D16
500GB*D16
500 KVA
66.0
50.5
32.0
3215
E
480 – 208/120 | 60 HZ, 150ºC, 3 PHASE, COPPER
CAT #
ALT #
RATING
H (in)
W (in)
D (in)
WEIGHT (lbs)
DIMS DWG
HT15A3B1-D16
15YSC*D16
15 KVA
28
21
14
231
A
HT30A3B1-D16
30YSC*D16
30 KVA
32
26.5
17
340
B
HT45A3B1-D16
45YSC*D16
45 KVA
32
26.5
17
418
B
HT75A3B1-D16
75YSC*D16
75 KVA
38.5
28.5
20
599
B+
HT112A3B1-D16
112YSC*D16
112.5 KVA
40.5
31.5
21.75
806
C
HT150A3B1-D16
150YSC*D16
150 KVA
40.5
36.5
21.75
942
C+
HT225A3B1-D16
225YSC*D16
225 KVA
51.5
40.5
26.5
1,755
D
HT300A3B1-D16
300YSC*D16
300 KVA
51.5
40.5
26.5
2,068
D
HT500A3B1-D16
500YSC*D16
500 KVA
66
50.5
32
3,382
E
480 – 240/120 | 60 HZ, 150ºC, 3 PHASE, COPPER
CAT #
Alt #
Rating
H (in)
W (in)
D (in)
Weight (lbs)
Case
HT15A3K1-D16
15DSC*D16
15 KVA
28
21
14
250
A
HT30A3K1-D16
30DSC*D16
30 KVA
32
26.5
17
370
B
HT45A3K1-D16
45DSC*D16
45 KVA
32
26.5
17
455
B
HT75A3K1-D16
75DSC*D16
75 KVA
38.5
28.5
20
645
B+
HT112A3K1-D16
112DSC*D16
112 KVA
40.5
31.5
22
840
C
HT150A3K1-D16
150DSC*D16
150 KVA
40.5
36.5
21.75
1045
C+
HT225A3K1-D16
225DSC*D16
225 KVA
51.5
40.5
26.5
1720
D
HT300A3K1-D16
300DSC*D16
300 KVA
51.5
40.5
26.5
1940
D
HT500A3K1-D16
500DSC*D16
500 KVA
66
50.5
32
3425
E

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